Continuous heating-furnace.



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D. DAVIS. y CONTINUOUS HEATING IUBNAGE.

D. DAVIS. CONTINUOUS HEATING FUBNUB.

unicum! FILED 1.43.1, 190s. k ,230, Patented Oct. 13, 1908. a annu-sum a.

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" "wenn-on WITNESSES UNITED STATES PATENT OFFICE.

'DAVID DAVIS, (Y CLEVELAND, OHIO, ASSIGNOR 'FO-AMERICAN STEEL WIRE COMPANY, OF

CHICAGO, ILLINOIS, A CORPORATION OF`NEW JEBBEY.

CONTINUOUS BEATING-FU'BNAOE,

Specification o! Letters Patent.

retenue oct. 1s, isos.

Appumm am umn v, 1m. sei-m No. 419,710.

To all it may concern.'

Be it known that I, Devin Dxx''is, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and'useful Imsection of the heating furnace; Fig. 2 is a` section thereof on' lines4 II-II o'f Fig. 1;A F ig. 3 is a detail top. plan View of my con- 'struction 4 partly/broken away; Fig. 4 is a 5 and 6 are sections side elevation; and Fi VI--VI respectively on the lines V--V an of Fig. 3.'

Incontinuous heating furnaces it is customary to push the billets into. the furnaces upon skid pipes through which a stream of water'is circulated to keep the pipes cool and to prevent them from burnin The wear and tear of the billets 'upon t e skid ipes,

. although said pipes are made of extra eavy iron, is such-that their greatest life is about six months, and'that only when turned one or more times so that the unworn portions may be exposed in turn to the wear and tear of the billets.

In my construction, I preferably employ u super-im osed shield, preferably of inverted V- ape, which protects the ipes from being cut o1' worn by the billets, thus giving them a life limite( only by the "life of the skid pipes in the u per or more hillil heated portion of the urnac'e in 4wh-,ic

, the furnace mustbe shut down.

In actual practice it has been found that the skid pipes with covering shields of my construction oftenlast over eighteen months,

throng may be varie v preferably do not cover said pi es. Owing The resulting while under the best of conditions similar pipes when uncovered will not last more tha six months.- Referring 'to the drawings, the skid pipes 1 are preferably mounted on piers 2 and have inverted V-shaped protective coveringsA or shields 3 which are preferably'made of steel.'

The shields are' provided with 'side lugls 4, which rest on'the piers 2 and serve to old the shields against turning o'r twisting move- ,ment They are also provided with the end 5 being shown as turned `downwardly into t e brickw'orkA of the piers, -while the lugs 6 embrace the skid-pipes and are secured thereto by bolts which are suffilugs 5 and 6, the lu ciently loose to permit of the movements of "ex ansion'and contraction. l

n o eration, the cold blanks .are-pushed the chargin in door 8 of the furnace upon the shiel s 3, and are shoved by any suitable pushing mechanism alon skids toward and in'to the highly heate portioi1`9 of the furnace wherethey now travel on the bare pi es. Owin to the construction of the shi ds 3, and't e smaller contact surface 10 of the shields 3. as compared with the4 contactsurface 11 of the pipes 1, the wearinglan'd cuttin by the b1 let is very largely reduced. "I s ow the shields 3 cov`ering the skid pipes only in that part of the furnace adjacenttb the char ing door, but' they may-be continued throug out the whole length of the skid pipes, but for the reasons stated I do not regard this as good practice. The Vsize, `-sha e d), aswell as Vthe type of furthe v and length of the shields nace, 8mo.Y

What I claim is:- Y y. ,l 1. A heating furnace havi longitudi-- nallyexte'nding skid pipes, and ields there#y for,` consisting yof inverted Vshape extendin less than the l length of th'e pipes; su stantiall'y as described.

2. A heating furnace, having longitudinally. extending skid pipes, an inverted V- shaped metal shield placed over the said pi s, andhavin su tantiallyas escribedl t 3. A continuous heating furnace, skid .pipes having shields'thereover which present dl metal' `pieces placed over Said. ips, said shields lateral supporting 111gS5- -m'lcontzlctsurface for the bille-ts. mid shields;

having supporting side lugs and scum-ing' end lugs; substa-mtmllxy as Jescnbed. D l

4. A; continuons fuxiuucn lmxmg longlcndx- 5 nully extending piers, skid pipes snmnntud on -the 'ex's undshields fm' said pipes. und

5. A cuntinlwns furnace having lnng'iunli- I nnlly extending' pivrs, skid pipas: snppurtud i 

